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# ========================================================================== #
# #
# KVMD - The main Pi-KVM daemon. #
# #
# Copyright (C) 2018 Maxim Devaev <[email protected]> #
# #
# This program is free software: you can redistribute it and/or modify #
# it under the terms of the GNU General Public License as published by #
# the Free Software Foundation, either version 3 of the License, or #
# (at your option) any later version. #
# #
# This program is distributed in the hope that it will be useful, #
# but WITHOUT ANY WARRANTY; without even the implied warranty of #
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the #
# GNU General Public License for more details. #
# #
# You should have received a copy of the GNU General Public License #
# along with this program. If not, see <https://www.gnu.org/licenses/>. #
# #
# ========================================================================== #
from typing import List
from typing import Dict
from typing import NamedTuple
# =====
class IpmiPasswdError(Exception):
def __init__(self, msg: str) -> None:
super().__init__("Incorrect IPMI passwd file: " + msg)
class IpmiUserCredentials(NamedTuple):
ipmi_user: str
ipmi_passwd: str
kvmd_user: str
kvmd_passwd: str
class IpmiAuthManager:
def __init__(self, path: str) -> None:
with open(path) as passwd_file:
self.__credentials = self.__parse_passwd_file(passwd_file.read().split("\n"))
def __contains__(self, ipmi_user: str) -> bool:
return (ipmi_user in self.__credentials)
def __getitem__(self, ipmi_user: str) -> str:
return self.__credentials[ipmi_user].ipmi_passwd
def get_credentials(self, ipmi_user: str) -> IpmiUserCredentials:
return self.__credentials[ipmi_user]
def __parse_passwd_file(self, lines: List[str]) -> Dict[str, IpmiUserCredentials]:
credentials: Dict[str, IpmiUserCredentials] = {}
for (number, line) in enumerate(lines):
if len(line.strip()) == 0 or line.lstrip().startswith("#"):
continue
if " -> " not in line:
raise IpmiPasswdError("Missing ' -> ' operator at line #%d" % (number))
(left, right) = map(str.lstrip, line.split(" -> ", 1))
for (name, pair) in [("left", left), ("right", right)]:
if ":" not in pair:
raise IpmiPasswdError("Missing ':' operator in %s credentials at line #%d" % (name, number))
(ipmi_user, ipmi_passwd) = left.split(":")
ipmi_user = ipmi_user.strip()
(kvmd_user, kvmd_passwd) = right.split(":")
kvmd_user = kvmd_user.strip()
if ipmi_user in credentials:
raise IpmiPasswdError("Found duplicating user %r (left) at line #%d" % (ipmi_user, number))
credentials[ipmi_user] = IpmiUserCredentials(
ipmi_user=ipmi_user,
ipmi_passwd=ipmi_passwd,
kvmd_user=kvmd_passwd,
kvmd_passwd=kvmd_passwd,
)
return credentials
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